Improvement in lamps



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l Lamps.A

10.152,068, Patentedlune161874.

JM/Mf- MMM UNITED STATES PATENT GFFICE.

ABNER BURBANK, OF ROCHESTER, NEW YORK, ASSIGNOR OFONE-HALF HIS RIGHT TOHENRY E. SHAFFER, OF SAME PLACE.

IMPROVEMENT IN LAMPS.

Specilicaticn forming part of Leiters Patent No. 152,068, (lated Junev16, 1874; applica-tion filed April 1G, 1874.

To all vwhom it may concern Be it known that I, ABNER BURBANK, of tl ecity of Rochester, in the county of Monrc e and State of N ew York, haveinvented a certain new and useful Improvement in Lamps 5 and I do herebydeclare that the following is a full, clear, and exact description ofthe construct-ion and operation of the same.

My improvement belongs to that class of lamps in which air is impelled,by some mechanical arrangement, through pipes to support the combustion.

The invention consists, irst, in combining with the lamp a side pipe orconnection extending from the main or induction pipe to the burner, andprovided with a connecting and disconnecting joint; second, in the useof a nozzle at the upper end of the side' pipe, of

proper form for insertion in the burner.

In the drawings, Figure l is an elevation of a lamp, showingmyimprovement. Fig. 2 are three different views of the nozzle. Fig. 3 isa view showing a modiication of the side tube.

A is a lamp of ordinary construction, and B is a bracket which sustainsit. D is the main induction air-pipe leading to the cellar or any otherdesired point. The air for supporting the combustion is forced throughthis pipe by any mechanical arrangement adapted to the purpose. These'pipes may be laid through a' house in the same manner that or dinarygas-pipes are, and the brackets B B may be connected with them at anydesired point, either on the walls or from the ceiling. E is the sidetube, which connects the induction-pipe D and burner G, and is the mainfeature of my invention. This tube passes outside the lamp-body, and hasa connecting and disconnecting joint, by which means it can be attachedto or detached from the lamp,

so that the lamp may be removed for iilling or v cleaning, or otherpurposes, and replaced at pleasure. This tube may be made in a varietyof ways. I prefer that shown in Fig. 1, in which a length of flexiblepipe, a, is used, made of rubber or other material, having a nozzle, F,at the top, which is inserted loosely in a socket, c, of the burner,thereby forming the connecting and disconnecting joint before spoken of.In. Fig. 3 is shown a stiff pipe having the joint in the center,consisting ot' a socket, d, and nipple f, which fit together when thelamp is in place. The two sections of the tube, in this case, arerespectively attached to the lamp and the bracket, so that the two partswill separate easily at the joint. Other forms of the side tube may beused, the only condition being that the joint is employed for connectingand disconnecting the parts. The advantage of the side tube abovedescribed consists in the exceeding cheapness of the connection betweenthe induction-pipe and lamp can be applied or removed, and the avoidanceof oil running into the air-pipe and obstructin g it, which is so commonin other lamps having an impelled current of air. In all other lamps ofthis kind, so far as I am' aware, a tube has been made centrally upthrough the body of the lamp, to allow the air to pass to the flame, orelse the lamp has set over a closed air -chamber, with stationaryconnections .to the burner. quire special and expensive construction ofthe lamp, and it is difficult to so form them that the air passage orjoint remains tight at all times, and especially when the lamp iscarelessly setin place. I obviate all these difficuL ties by the use ofthe side tube E, with a connecting and disconnecting joint-as I can useany ordinary lamp and bracket-and the con nection is made withouttrouble or any considerable expense. An important feature is theprevention of oil running down into the induction-pipe D, which almostinvariably occurs in the old form, as the induction-pipe opens directlyup into an air-chamber below the lamp and receives all the drippings. Inmy case the top of the induction-pipe is closed, and no oil can passround through the circuit of the side tube E. The nozzle may be madetubular, and of closed form, as shown at the bottom in Fig. 2, or it maybe open, as shown at the top and in the middle in the same igure. In thelatter case one or more openings, g g, are made in the sides in rear ofthe point b, as shown, and a secondary nozzle, h, is used,

which is screwed or otherwise attached in the the burner, the greatfacility with which thev Such devices rerear end of the nozzle. Thissecondary nozzle has a fine opening, i, communicating with the pipe a,While the main point b has a large airpassage, k, opening into theburner. The air blowing through i in a iine jet carries With it byfriction much of the outside air which enters through the openings g g,as indicated by the arrows, Fig. 2, and directs it into the passage k,whence it passes to the burner. So large is the volume of outside aircarried to the llame by this means, that but a slnall amount of theinduction air from the side tube is required, and therefore the powerrequired to drive. the apparatus will run much longer. The onlyrequisite is to make the passage z' small enough, so that considerableforce of the inipelling-jet is produced, the frietion with the exteriorair being sufficient to feed the combustion. This same nozzle may beused in what is known as the mechanical lamp, having an air-impellingapparatus in the base of the lamp itself. This apparatus-might be madeeffective if the nozzle or end of the tube E were not inserted in theopening c, but remained a little distance therefrom. In that case, theoutside air would be drawn in at the space between the end of the nozzleor tube and the socket e, and driven by the jet to the burner.

My invention, as above described, is very effective in operation, andproduces a light equal to gas.

Having thus described my invention, I do not claim a lamp having anilnpelled current of air to support the combustion, nor do I claim asystem of pipes for conveying an im- 1 pelled current of air to lamps.

'1. The combination, with a lamp, A, andan induction air-pipe, D, of aside tube, E, which extends around outside the lamp, and conveys the airin an independent jet from the induction-pipe beyond the lamp, to aclosed chamber beneath the blaze, so that said jet does not come incontact'ivith the oil before lvitnesses R. F. Oscoop, H. E. SHAFFER.

